Siphon flush tank



Nov. 1, 1955 R. BURCHETT 2,722,015

SIPHON FLUSH TANK Filed Jan. 14, 1955 IN VEN TOR. 20 Y 6UCHE 7" 7" ,4 TTO ENE V5 United States Patent SIPHON FLUSH TANK Roy Burchett, Seiling, Okla, assignor of one-half to Henry Sander, Selling, Okla.

Application January 14, 1955, Serial No. 481,782

3 Claims. (Cl. 4-46) This invention relates to improvements in flushing apparatus for water closets, and the like, and more particularly to an improved flush tank of the siphon type.

The main object of the invention is to provide a novel and improved siphon flush tank which is simple in construction, which involves only a few parts, which is arranged to prevent leakage of water from the tank, and which provides economic utilization of the water in the tank.

A further object of the invention is to provide an im proved siphon flush tank which involves inexpensive components, which is reliable in operation, which does not require close tolerances on the parts interfitting therein, which is not subject to substantial wear, and which provides economical utilization of the water in the tank as well as a dependable flushing action.

Further objects and advantages of the invention will become apparent from the following description and claims, and from the accompanying drawings, wherein:

Figure 1 is a front elevational view, partly in vertical cross section, of an improved flush tank provided with siphon means, according to the present invention;

Figure 2 is a horizontal cross sectional view taken on line 22 of Figure 1;

Figure 3 is an enlarged vertical cross sectional view taken on line 3-3 of Figure 2.

Referring to the drawings, 11 generally designates the improved flush tank, said tank comprising the main receptacle 12 provided with the removable top cover 13. Connected to the bottom wall 14 of the main receptacle 12 is the outlet conduit 15 which is formed at its upper portion with the flange union element 16 and which is secured to the bottom wall 14 by a suitable clamping nut 17, suitable gaskets being interposed between the aperture in the bottom wall receiving the union member 16 and said union member to provide a sealed joint. A com ventional refill tube 18 is connected to the union member 16, as shown in Figures 1 and 2.

Connected to the union member 16 is a siphon conduit 19 which is of inverted U-shape, the siphon conduit having a depending open ended portion 20. Designated at 21 is a priming cup which is secured to the siphon member 19 by means of a clamping band 22, suitable horizontal spacing members 23, 23 being employed between the priming cup 21 and the siphon tube 19, as shown in Figures 1 and 2, said spacing members being, for example, secured to the priming cup 21 and being in abutment with the siphon tube 19.

As shown, the open ended portion of the siphon tube extends vertically into the priming cup and is substantially axially positioned relative to said cup. Designated at 24 is a generally annular piston member, comprising a flat annular ring 25 of suitable rigid material, such as brass or the like, to which is secured the deformable resilient flat annular ring 26, of rubber or the like, said ring 26 being sealingly and slidably engageable with the inside wall surface of the priming cup 21, as is clearly shown in Figure 3. The center aperture of the piston 2,722,015 Patented Nov. 1, 1955 member 24 is dimensioned to sealingly and slidably receive the depending vertical portion 20 of the siphon tube 19. Designated at 27 and 28 are spaced supporting bands which are loosely engaged around the depending vertical portion 20 of the siphon tube, said bands being rigidly secured to the piston 20 by spaced, generally triangular rigid vane elements 29.

Designated at 30 is a yoke member having the arms 31, 31 which are pivotally connected at 32, 32 to the upper ends of respective link bars 34, 34. The lower ends of the link bar 34 are respectively pivotally connected to diametrically opposite points on the upper supporting band 27. The stem portion 33 of the yoke member 30 is rigidly connected to a transversely extending shaft member 35 which extends through and which is journalled in the upper portion of the front wall 36 of the main portion 12 of the flush tank 11.

Secured to the outer end of the shaft 35 is the operating handle 37. e

Normally, as shown in Figure 1, the annular piston 24 is disposed in an elevated position above the priming cup 21. When it is desired to flush the tank, the handle 37 is rotated to cause the yoke 30 to be rotated counterclockwise, as viewed in Figure 1, which moves the annular piston 24 downwardly into the priming cup 21 and which forces water upwardly through the vertical portion 20 into the siphon tube 19 and thence through the outlet conduit 15. The siphon tube 19 is thus primed, and as the piston 24 continues downwardly, the piston descends below the open lower end of the portion 20, allowing water from the flush tank to flow freely into the siphon tube, whereby the flushing action is continued for a desired period of time. If so desired, the tank 11 may be completely emptied, but if the operator desires to terminate the flushing action, it is merely necessary to rotate handle 37 in a direction to move the yoke member 30 clockwise, as viewed in Figure 1, whereby the annular piston 24 will be elevated sufiiciently to terminate the siphon action. Of course, if the piston 24 is again moved downwardly to the bottom of cup 21, the siphoning action will be resumed if there is sufiicient water in the tank.

It will be readily apparent that the operator may therefore raise the priming plunger member 24 and stop the flow of water during the initial flushing action, thereby saving a part of the water in the tank for use in a subsequent flushing action.

It will be further apparent that the top end portion of the siphon tube is a substantial distance above the normal water level in the flush tank, whereby leakage of the water from the tank into the outlet conduit 15 cannot occur, and that the water cannot be discharged from the tank until the annular piston member 24 has been depressed manually by means of the operating handle 37.

It will be understood that the water is admitted into the tank 11 in the conventional manner, as by the use of a suitable float-controlled valve or by other well known means, so that the supply of water in the tank is automatically replenished when the level of water descends below a predetermined height in the tank.

While a specific embodiment of an improved siphon flush tank has been disclosed in the foregoing description, it will be understood that various modifications within the spirit of the invention may occur to those skilled in the art. Therefore, it is intended that no limitations be placed on the invention except as defined by the scope of the appended claims.

What is claimed is:

1. In a flush tank of the character described, an outlet conduit connected to the bottom of said tank, a priming cup mounted on the bottom of the tank, a siphon conduit connected to said outlet conduit and being of inverted U- shape, the siphon conduit having a depending open-ended portion extending vertically into said priming cup, an annular piston member slidablyvmounted onto the depending end portion, a flush lever pivoted in a wall of the tank, and link means connecting said flush member to said piston member, said depending open ended portion being spaced sufficiently from the bottom of the cup so that said piston member may be at times depressed below the open end of said depending portion.

2. In a flush tank of the character described, an outlet conduit connected to the bottom of said tank, a priming cup mounted on the bottom of the tank, a siphon conduit connected to said outlet conduit and being of inverted U- shape, the siphon conduit having a depending open-ended portion extending vertically into said priming cup, an annular piston member arranged coaxially with said depending portion and being slidably receivable in said cup, said piston member having a central aperture through which said depending portion is slidably receivable, a supporting member slidably engaged around said depending portion above said piston member, means connecting said supporting member to said piston member, a flush lever pivoted in a wall of the tank, and link means connecting said flush lever to said supporting member, said depending openvended portion being spaced sufficiently from the bottom of the cup so that said piston member may be at times depressed below the open end of said depending portion.

3. In a flush tank of the character described, an outlet conduit connected to the bottom of said tank, a priming cup mounted on the bottom of the tank, a siphon conduit connected to said outlet conduit and being of inverted U- shape, the siphon conduit having a depending open-ended portion extending vertically into said priming cup, an annular piston member arranged coaxially with said de pending portion and being slidably received in said cup, said piston member having a central aperture through which said depending portion slidably receivable, a plurality of vertically spaced band members slidably engaged around said depending portion above said piston member, means rigidly connecting said band members to said piston member, a flush lever pivoted in a wall of the tank, and link means connecting said flush lever to the uppermost band member, said depending open-ended portion being spaced sufiiciently from the bottom of the cup so that said piston member may be at times depressed below the open end of said depending portion.

No references cited- 

